The appearance of rabbit production given Leucaena leaf flour in the ration

. Feed is one of the most substantial aspects of financing in the rabbit farming business. Rabbits can breed efficiently with cost-effective feed. This study aims to assess the impact of incorporating Leucaena leaf meal into the diet of rabbits on their growth and production. The study was conducted at the North Sulawesi Agricultural Technology Assessment Center (AIAT) from March to May 2020, using 16 New Zealand White broiler rabbits, all males over 3 months old. The experimental design used a completely randomized design with four treatments and four replications. The treatments tested were as follows: P1 - 0% Leucaena leaf meal, P2-10% Leucaena leaf meal, P3-20% Leucaena leaf meal, and P4-30% Leucaena leaf meal. Parameters observed include weight gain, feed consumption, and feed conversion. The results are shown as follows: -weight gain: P1-247.45 grams, P2-202.74 grams, P3-196.37 grams, P4-225.70 grams. - Feed consumption: P1-6851.73 grams, P2-6902.88 grams, P3-7590.32 grams, P4-6946.57 grams. - Feed conversion: P1-28.98, P2-37.31, P3-39.98, P4-33.81. These findings suggest that introducing up to 30% Leucaena leaf meal into the diet of rabbits does not adversely affect weight gain.


Introduction
The demand for animal protein is increasing, along with the increasing population and increasing awareness of the consumption of balanced and diverse nutrition.The pace of demand for livestock products in the form of meat, milk, and eggs is not balanced by the supply.To meet the demand, especially for meat, improvements in the productivity of major producing livestock such as cows, chickens, and pigs must continue, and look for alternative meat substitutes.
Rabbit livestock is one of the potential livestock commodities as a meat provider, because growth and reproduction are fast and easy maintenance does not require large capital [1,2] Further described one reproductive cycle of a rabbit can give 8-10 Cubs at the age of 8 weeks body weight can reach 2 kg or more.Rabbit livestock has the advantage of producing highquality meat protein content of 20.8% with a fat content of 10.2% and low cholesterol of 0.1%, does not require extensive maintenance area, can utilize feed ingredients from forage and kitchen waste [3,4] As the maintenance of other livestock, the development, and productivity of rabbits is still low due to low seed quality, less optimal maintenance management and the largest feed quality is low, the amount is insufficient and the availability is very volatile sometimes occur scarcity.
Feed plays a very significant role in whether or not the farm business is successful.[5] stated that the role of feed in the field of animal husbandry is very important because it is an integral part and the key to the success of livestock production.Livestock productivity is influenced by genetics, management, and feed [6] To optimize the genetic potential of livestock is done by providing good quality feed, in sufficient quantities and continuously available.Livestock that gets low nutritious food will be relatively small and have less substance, and vice versa cattle that get high nutritious feed have a larger size and complete substance [7] The processed Leucaena leaves in the form of leaf flour are potentially used as ingredients for rabbit rations.Chemical composition of Leucaena leaves: Protein 21.5%, BETN 49.5%, SK 14.3%, crude fat 6.5%, ash 6.28%, calcium 2.7%, and phosphor 0.17% [7] The use of Leucaena leaves as feed should be limited because they contain antinutrients such as mimosine which can interfere with the biological function of livestock, if consumed in large quantities and continuously for a long period of time [8,9] The results of previous studies conducted on pigs by the Bogor Livestock Research Institute recommend the use of Leucaena leaves in rations not exceeding 20%.It is necessary to study large the amount of use of Leucaena leaf flour in rabbit livestock ration.This study aims to determine the use of Leucaena leaves in rabbit rations against weight gain.

Methods
This research was conducted at the North Sulawesi Agricultural Technology Assessment Center from March to May 2020 from preparation to observation.The materials used in the study were 16 male rabbits bred New Zealand White age 3 months.Feed is given in the formulation of milled corn, coconut meal, rice bran, manufacturer concentrate, Leucaena leaf flour, and mineral mix.Equipment used digital scales, basins, stationery, cameras, feed mixing bins, and feed bags.

Effect of treatment on final body weight
The final body weight is an indicator of the selling price of livestock.The heavier the higher the selling price.The final body weight is the final weight achieved at the end of the maintenance process.The achievement of the final weight of rabbit Livestock Research is listed in Table 3.The results of observation of the effect of treatment on the final body weight obtained in the treatment of P1 rations without flour Leucaena average final weight 2504 + 365.9 gr followed by treatment P3= rations containing 20% flour leaves Leucaena average final body weight 2162 + 79.34 gr, P4= rations containing 30% flour leaves Leucaena average final ----------------------------------------g------------------------------------------------ The results of analysis of Variance (Table 5) showed that the treatment of the use of Leucaena leaf flour in rabbit rations to a concentration of 30% has not shown effect to the final body weight (Fhit<Ftab).
The results of the analysis of Variance (Table 7) showed that the treatment of the use of Leucaena leaf flour in the rabbit ration does not have a real effect (Fhit<Ftab) meaning that the use of Leucaena leaf flour up to 30% in the ration has not shown the difference in the amount of feed consumption.The absence of differences in the treatment of ration consumption, it is suspected that there is a possibility because the nutritional content contained in each treatment is relatively not much different.Stated by [13) that the nutrient composition and ration formulation will affect feed consumption, when the needs of livestock are met then the livestock will stop consuming feed.High and low energy content of feed will at least affect many rations [14].( ns ) Non-significant (P <0,05)

Effect of treatment on weight gain
The highest average weight gain was obtained from the ration without Leucaena 247 + 45.49 gr (P1) leaf flour followed by the treatment ration containing 30% Leucaena 225.6 +70.12 gr (P4) leaf flour, the treatment ration containing 10% Leucaena 202 + 74.8 gr (P2) flour, and the lowest in the treatment ration containing 20% Leucaena 196 + 38.14 gr (P3) leaf flour.
The results of observations of the effect of treatment on weight gain are shown in Table 8.The results of the analysis of the variance of the effect of treatment on weight gain had no significant effect (Fhit<Ftab).This means that the use of Leucaena leaf flour up to 30% in the ration of rabbits gives the same response to weight gain (Table 9).According to [15], weight gain is strongly influenced by feed consumption, in addition to the achievement of optimal body weight is determined by genetic factors, management, environment, and feeding [14].

Effect of Treatment on Feed Conversion
The results of observations of the effect of treatment on the value of feed conversion (Table 10), obtained data on the largest feed conversion value in the treatment of rations containing 20% Leaf flour Leucaena average 39.9 + 8.4 (P3), followed by rations containing 10% leaf flour Leucaena average 37.3 + 12.2 (P2), followed by rations containing 30% leaf flour Feed conversion rate describes what amount of food to form weight gain, feed conversion rate shows the efficiency of food use.[16] stated that high feed conversion shows the use of less efficient feed instead of numbers approaching one feed more efficiently.The conversion value obtained from this study is very large.This is due to the feed given to rabbits during the study many are wasted due to the habit of rabbits scavenging for food with both front legs when eating.Be done designing feeding places for rabbits to prevent scattered feed.

Conclusion
The utilization of Leucaena leaf meal in rabbit diets, up to a maximum inclusion rate of 30%, did not produce significant differences in weight gain, feed conversion, and feed efficiency of rabbits compared to the control group.This indicates that the Leucaena leaf meal can be a viable food component without reducing the growth potential of livestock and can ensure the economic viability of rabbit farming and its environmental impact because efficient feed utilization is a key consideration in sustainable farming.

Table 2 .
Effect of treatment on the performance of rabbits

Table 3 .
Effect of treatment on the final weight of rabbits during observation P1= without Leucaena leaf flour.P2 = ration with Leucaena leaf flour 10%.P3= ration with Leucaena leaf flour 20% dan P4= ration with Leucaena leaf flour 30% ⑴ 131.3 gr and the last P2= rations containing 10% flour leaves Leucaena average final body weight 2162 + 79.34 gr, P4 = rations containing 30% flour leaves Leucaena average final body weight 2218.1 + 131.3 gr and the last P2= rations containing 10% flour leaves Leucaena average final body weight Agency end of 1999 + 419.8 gr.

Table 5 .
Analysis of covariance the effect of treatment on the final body weight

Table 6 .
Effect Of Treatment on Feed Consumption

Table 8 .
Effect of treatment on weight gain

Table 9 .
Analysis of covariance the effect of treatment on weight gain